RS232 MCQ’s

Electronics & Communication Engineering Embedded System

This set of Embedded System Multiple Choice Questions & Answers (MCQs) focuses on “RS232″.

1. Which of the following can affect the long distance communication?
a) clock
b) resistor
c) inductor
d) capacitor

2. Which of the following is an ideal interface for LCD controllers?
a) SPI
b) parallel port
c) Serial port
d) M-Bus

3. How many areas does the serial interface have?
a) 1
b) 3
c) 2
d) 4

4. Which of the following can provide hardware handshaking?
a) RS232
b) Parallel port
c) Counter
d) Timer

5. The RS232 is also known as
b) SPI
c) Physical interface
d) Electrical interface

6. Which of the following is not a serial protocol?
a) SPI
b) I2C
c) Serial port
d) RS232

7. Which of the following can be used for long distance communication?
a) I2C
b) Parallel port
c) SPI
d) RS232

8. Which are the serial ports of the IBM PC?
a) COM1
b) COM4 and COM1
c) COM1 and COM2
d) COM3

9. How much voltage does the MC1489 can take?
a) 12V
b) 5V
c) 3.3V
d) 2.2V

10. Which of the following have an asynchronous data transmission?
a) SPI
b) RS232
c) Parallel port
d) I2C

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